Kc pretty much said in a WND interview when asked about the less and less appearances of "special" zombies (
jumpers/
runners/behemoths) that it may be they are going away....I believe he phrased it like that, possibly more ambiguously. But he did sort of say he was giving away a bit saying that. I think it means the zombies have been improved upon norms to runners to jumpers to behemoths or all at once, until we perfected to the Inklings. So yea, The behemoths were most likely the last of their breed on this thought. Could be wrong or misunderstanding, but thats what I gathered.
Edit: Upon reading Nik's post, I think he's right, there were 2 behemoths before the battle, and it only seems like one was dropped. I'm pretty sure we hear the second one screaming later, but never actually die
